. >> investigators and taxes have not determined a cause of the explosion that killed 14 people including 10 first responders and a fertilizer plant in west texas. investigators say they pinpointed where the blast originated. the mpeg damaged or destroyed dozens of homes and businesses leaving hundreds of people homeless and in need of help. authorities have also released 91 tapes that captured the initial panic after the fire and massive blast. >> there was some type of explosion and our house, all of the windows are completely blocked and. the walls, part of it is blown off. >>, down and take a deep breath. we are aware of the situation and we are sending people out there as soon as we can. >> city leaders allowed some residents to return to their homes are the weekend but they still face strict curfews. fire officials will hold a memorial service at baylor university on thursday and honor of the volunteer firefighters who died. >> the boy scouts of america are proposing to partially lift its longtime ban on homosexuals. this proposal comes after weeks of private deliberation between th